I made a field test and I can say that sleeping in a hammock doesn't suit me. Ultra light tent is way better for me.
Like @noah said, hammocks are cold. Even in normal temperatures, warmly dressed and using down sleeping bag I felt very cold for 2 nights and I slept very little. Terrible. The problem was the bottom, even if i used survival foil between sleeping bag and hammock. In some places the down is crushed more and I got cold spots.
If I use tent, sleeping pad and the same down bag I feel more than enough warm.
Using mummy sleeping bag and hammock is very unpractical. It is hard to get into in, close the zippers,...
My setup: 1p tent, pegs, sleeping pad, down bag is: 1,6 kg(3,5 pounds). I thought I would save some weight with hammock.
Hammock setup: Hammock, ropes, down sleeping bag = 1,1 kg (2,4 pounds).
In my experience it is much better to carry a little more and sleep in a tent with sleeping pad. 0,5 kg less weight is not worth it.
I can say the good thing is more pristine wilderness experience, wild animals near you:) I think that mosquitos were not a problem. I used cheap mosquito net from the supermarket just to cover the face.
So tent is my choice. Hammock is way too cold. Perhaps I would use hammock for more static vacation, if I would spend sometime near beach, drink beer, lie down and could carry extra weight for blankets,.. I hike a lot so in my case the tent is way better for me.